You're just as likely to get the wrong prescription with an optometrist -- they're relying on your self-report after all -- except it's harder to correct, becau

You're just as likely to get the wrong prescription with an optometrist -- they're relying on your self-report after all -- except it's harder to correct, because you need to go and make another doctor appointment to have it corrected (vs using the machine again). Also, if someone feels they would get better vision correction working with a trained professional, I'm fine with that. I only object to _requiring_ a doctor's prescription to get glasses.